Optical test method for checking optomechanical design in early instrument models: Application to the RAX Spectrometer aboard JAXA’s MMX Mission

Conor Ryan; Martin Pertenais; Ute Böttger; Maximilian Buder; Yuichiro Cho; Heinz-Wilhelm Hübers; Till Hagelschuer; Steve Rockstein; Selene Rodd-Routley; Fernando Rull; Susanne Schröder; Friedrich Schrandt

doi:10.1117/12.2594191

24 August 2021 Optical test method for checking optomechanical design in early instrument models: Application to the RAX Spectrometer aboard JAXA’s MMX Mission

Conor Ryan, Martin Pertenais, Ute Böttger, Maximilian Buder, Yuichiro Cho, Heinz-Wilhelm Hübers, Till Hagelschuer, Steve Rockstein, Selene Rodd-Routley, Fernando Rull, Susanne Schröder, Friedrich Schrandt

Author Affiliations +

Proceedings Volume 11820, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III; 118200N (2021) https://doi.org/10.1117/12.2594191
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

Verification of thermal-mechanical-optical design for optical instruments in space exploration is highly significant due to large temperature variation and exposure to high shock and vibration levels. Such instruments must be completely robust to these harsh environments, as there are usually no options for realignment. The JAXA Martian Moons eXploration (MMX) Mission is set for launch in 2024 with main objectives to study the Martian moons, Deimos and Phobos. A rover will acquire for the first time Raman spectra of the Phobos surface using the Raman Spectrometer for MMX (RAX) developed at DLR. The Structural-Thermal-Model (STM) of RAX presented an early opportunity to evaluate the robustness of the instrument optical alignment to thermal and mechanical environments. An interferometric method implementing dummy objectives with cross hairs was developed to enable inline six-DOF measurements at critical places within the STM before development model (DM) optics were manufactured.

Conference Presentation

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Conor Ryan, Martin Pertenais, Ute Böttger, Maximilian Buder, Yuichiro Cho, Heinz-Wilhelm Hübers, Till Hagelschuer, Steve Rockstein, Selene Rodd-Routley, Fernando Rull, Susanne Schröder, and Friedrich Schrandt "Optical test method for checking optomechanical design in early instrument models: Application to the RAX Spectrometer aboard JAXA’s MMX Mission", Proc. SPIE 11820, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III, 118200N (24 August 2021); https://doi.org/10.1117/12.2594191

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